1、import randomstudents = []def show_all(): print('***开始打印信息***') for x in students: print(x) print('***打印信息结束***')
2、def insert_stu(name, age, grade, score=60): students.append({'name': name, 'age': age, 'grade': grade, 'score': score})
3、def back_age_add(): res = 0 for x in students: res += x['age'] return res
4、def sort_age(up=True): for i in range(len(students)-1): for j in range(i+1, len(students)): if students[i]['age'] > students[j]['age']: students[i], students[j] = students[j], students[i] if not up: students.reverse()
5、def after_year(): for x in students: x['age'] += 1 x['grade'] += 1
6、def clear_score(): for x in students: x['score'] = 0
7、names = ['hhl', 'ldh', 'zxy', 'cgx', 'xtf', 'cls', 'xcyz']for i in range(len(names)): insert_stu(names[i], random.randrange(18, 29), i+1, random.randrange(50, 71))show_all()
8、print(back_age_add())
9、sort_age()show_all()
10、sort_age(False)show_all()
